Enter the length and width of the aperture and the thickness of the stencil into the calculator to determine the stencil area ratio.
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Stencil Area Ratio Formula
The following equation is used to calculate the Stencil Area Ratio.
SAR = \frac{L \cdot W}{2\,(L+W)\,T}- Where SAR is the stencil area ratio (dimensionless)
- L is the length of the aperture
- W is the width of the aperture
- T is the thickness of the stencil
What is a Stencil Area Ratio?
Definition:
A stencil area ratio compares the area of the aperture opening to the area of the aperture walls (aperture perimeter × stencil thickness).
How to Calculate Stencil Area Ratio?
Example Problem:
The following example outlines the steps and information needed to calculate Stencil Area Ratio.
First, determine the length of the aperture. In this example, the length is 5 inches.
Next, determine the width of the aperture. In this case, the width is 3 inches.
Next, determine the stencil thickness. This stencil has a thickness of 1 inch.
Finally, calculate stencil area ratio using the formula above:
SAR = (L*W)/(2*(L+W)*T)
SAR = [(5*3)/(2*(5+3)*1)]
SAR = .9375
